Arduino uno dont work, no error message

Other Hardware General Electronics
1

(I'm new)
Hello!
The flashing program and the serial monitor do not work.
There is no error message. The only mistake I've made with the arduino uno is connecting digital 1 and 0 to a 9 volt battery.
is my arduino uno broken or is there a bug in arduino ide?

2

pin 0 and 1 are TX/RX wich is used for serial communication.
bad idea to put a voltage on!

when connected to your PC with USB (and without external power), does the board is connected to a COM port? (visible in the top screen of the IDE).

3

Yes, that is connected to COM-3 PORT

4

I say this is good news. So next step, the UNO is connected to PC with COM port (the actual number depends on your PC config).
What happened when trying to upload a sketch like "blink" or "bare minimum" ?

don't hesitate to copy/paste here (no screenshot please) every message from the IDE.

(I am pretty sure I am not skilled enough to fully help you but every info you post may help)

5

Blink programm:

/*
  Blink

  Turns an LED on for one second, then off for one second, repeatedly.

  Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO
  it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to
  the correct LED pin independent of which board is used.
  If you want to know what pin the on-board LED is connected to on your Arduino
  model, check the Technical Specs of your board at:
  https://www.arduino.cc/en/Main/Products

  modified 8 May 2014
  by Scott Fitzgerald
  modified 2 Sep 2016
  by Arturo Guadalupi
  modified 8 Sep 2016
  by Colby Newman

  This example code is in the public domain.

  https://www.arduino.cc/en/Tutorial/BuiltInExamples/Blink
*/

// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(LED_BUILTIN, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(LED_BUILTIN, HIGH);  // turn the LED on (HIGH is the voltage level)
  delay(1000);                      // wait for a second
  digitalWrite(LED_BUILTIN, LOW);   // turn the LED off by making the voltage LOW
  delay(1000);                      // wait for a second
}

Sketch uses 924 bytes (2%) of program storage space. Maximum is 32256 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 2039 bytes for local variables. Maximum is 2048 bytes.

6

Led dont blink, it's only on

7

ok.

sorry you put IDE message about the compiling of the sketch (wich is independant of your board issue).
what was displayed on the IDE when uploading?

8

That show this only.

9

You have probably damaged your arduino, the main chip and USB converter chip are both connected to those pins, both are rated for 5V(5.5V MAX).

10

Throw the board away. Even if you manage to fix it without too much effort, it will be unreliable. Parts that might have survived the abuse will probably be dying a slow and painful death. So you will have to replace at minimum the 328P, the TTL-to-USB adapter and the opamp.

11

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.